docs: def normal_h2(size: int = 10000) -> Histogram2D:
      """A simple 2D histogram with normal distribution.
  
      Parameters
      ----------
      size : Number of points
      """
      data1 = np.random.normal(0, 1, (size,))
      data2 = np.random.normal(0, 1, (size,))
      return h2(data1, data2, name="normal", axis_names=tuple("xy"), title="2D normal distribution")